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Title: Pascalammetry with operando microbattery probes: Sensing high stress in solid-state batteries

Abstract

Energy storage science calls for techniques to elucidate ion transport over a range of conditions and scales. We introduce a new technique, pascalammetry, in which stress is applied to a solid-state electrochemical device and induced faradaic current transients are measured and analyzed. Stress-step pascalammetry measurements are performed on operando microbattery probes (Li 2O/Li/W) and Si cathodes, revealing stress-assisted Li + diffusion. We show how non-Cottrellian lithium diffusional kinetics indicates stress, a prelude to battery degradation. An analytical solution to a diffusion/activation equation describes this stress signature, with spatiotemporal characteristics distinct from Cottrell’s classic solution for unstressed systems. These findings create an unprecedented opportunity for quantitative detection of stress in solid-state batteries through the current signature. Generally, pascalammetry offers a powerful new approach to study stress-related phenomena in any solid-state electrochemical system.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [1]
  1. Univ. of Maryland, College Park, MD (United States)
Publication Date:
Research Org.:
Univ. of Maryland, College Park, MD (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1499919
Grant/Contract Number:  
SC0001160
Resource Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 4; Journal Issue: 6; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE

Citation Formats

Larson, Jonathan M., Gillette, Eleanor, Burson, Kristen, Wang, Yilin, Lee, Sang Bok, and Reutt-Robey, Janice E. Pascalammetry with operando microbattery probes: Sensing high stress in solid-state batteries. United States: N. p., 2018. Web. doi:10.1126/sciadv.aas8927.
Larson, Jonathan M., Gillette, Eleanor, Burson, Kristen, Wang, Yilin, Lee, Sang Bok, & Reutt-Robey, Janice E. Pascalammetry with operando microbattery probes: Sensing high stress in solid-state batteries. United States. doi:10.1126/sciadv.aas8927.
Larson, Jonathan M., Gillette, Eleanor, Burson, Kristen, Wang, Yilin, Lee, Sang Bok, and Reutt-Robey, Janice E. Fri . "Pascalammetry with operando microbattery probes: Sensing high stress in solid-state batteries". United States. doi:10.1126/sciadv.aas8927. https://www.osti.gov/servlets/purl/1499919.
@article{osti_1499919,
title = {Pascalammetry with operando microbattery probes: Sensing high stress in solid-state batteries},
author = {Larson, Jonathan M. and Gillette, Eleanor and Burson, Kristen and Wang, Yilin and Lee, Sang Bok and Reutt-Robey, Janice E.},
abstractNote = {Energy storage science calls for techniques to elucidate ion transport over a range of conditions and scales. We introduce a new technique, pascalammetry, in which stress is applied to a solid-state electrochemical device and induced faradaic current transients are measured and analyzed. Stress-step pascalammetry measurements are performed on operando microbattery probes (Li2O/Li/W) and Si cathodes, revealing stress-assisted Li+ diffusion. We show how non-Cottrellian lithium diffusional kinetics indicates stress, a prelude to battery degradation. An analytical solution to a diffusion/activation equation describes this stress signature, with spatiotemporal characteristics distinct from Cottrell’s classic solution for unstressed systems. These findings create an unprecedented opportunity for quantitative detection of stress in solid-state batteries through the current signature. Generally, pascalammetry offers a powerful new approach to study stress-related phenomena in any solid-state electrochemical system.},
doi = {10.1126/sciadv.aas8927},
journal = {Science Advances},
number = 6,
volume = 4,
place = {United States},
year = {2018},
month = {6}
}

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